Is prop bush in Suzuki DF-6 replaceable?

[NickC]

Can anyone tell me if I can easily replace the prop bush in a Suzuki DF-6 (58120-91J00), is it just pressed into the prop? If so how far should it be pressed in?

These are available for sensible cost but I am told they need to be pushed in by a professional prop repairers. However, looking at it I can't see any metal sleeve around the outside, just looks like rubber pushed directly into the prop.

Thanks,
Nick

 

[dougg]

What make you think it needs replacing? does it just cavitate when you wind on the gas?

 

[GrahamM376]

I never managed to find anyone who could re-bush the small props and Suzuki don't list them as spares, unlike the larger props. I think a replacement prop cost me around 80 euro Bring back shear pins.

 

[NickC]

What make you think it needs replacing? does it just cavitate when you wind on the gas?

First problem noticed was that the prop had about 1/8" endfloat along the splines, the prop nut cannot be done up any further as the split-pin will then not fit. Checking the parts list shows no spacer so all parts appear to have been assembled correctly.

I have been advised that this endfloat is caused because the prop slip bush is worn.

Don't yet know if it actually slips or not as the engine is currently ashore.

Nick

 

[NickC]

I never managed to find anyone who could re-bush the small props and Suzuki don't list them as spares, unlike the larger props. I think a replacement prop cost me around 80 euro Bring back shear pins.

A spare bush is available from Suzuki quite cheaply (about £15).

 

[GrahamM376]

A spare bush is available from Suzuki quite cheaply (about £15).

Do you have a part number? They rely on the bush coming unstuck if the prop's grounded rather than the old shear pins. Not sure about the OP's problem though as the usual sign of bush problems is that as revs increase the prop starts slipping and speed slows, very much like a slipping clutch on a car.

 

[NickC]

Do you have a part number? They rely on the bush coming unstuck if the prop's grounded rather than the old shear pins. Not sure about the OP's problem though as the usual sign of bush problems is that as revs increase the prop starts slipping and speed slows, very much like a slipping clutch on a car.

Part number: 58120-91J00

 

[GrahamM376]

Part number: 58120-91J00

Thanks for that, will pass it on to the guy I sold the engine to.

 

[NickC]

Have now tested out the engine on a small rib and there wasn't any slippage of this bush at all. Maybe there might be more if it is run on the larger/heavier yacht. Still can't see what apart from this bush could cause excessive endfloat, perhaps it was just fitted too far in when it was new?

 

[VicS]

Have now tested out the engine on a small rib and there wasn't any slippage of this bush at all. Maybe there might be more if it is run on the larger/heavier yacht. Still can't see what apart from this bush could cause excessive endfloat, perhaps it was just fitted too far in when it was new?

Parts nos 17,18 and 24 in the diagram below all in place ?

 

[NickC]

Parts nos 17,18 and 24 in the diagram below all in place ?

Hi VicS,

Yep all those parts present and correct. Actually part 24 is the only important bit, it has an internal taper which fits against the opposite taper on the propeller shaft, there is no perceivable wear on either parts.

Nick